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Abstract:

We studied activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula, during the 1992-93 summer. We counted the number of penguins crossing a specific point on their route to and from the colony. Penguins showed a strong daily rhythm of activity, with a two-peak pattern for those leaving the colony and a one-peak pattern for those returning. The peak of penguins departing to sea was at dawn, with a secondary peak in the afternoon which was coincident with the peak of returns. Although this behaviour could be explained by nest relief schedules, the pattern remained once crèches had formed. The main peak of departures strongly correlated with sunrise, which might support the existence of a light signal synchronizing activity. Even though an external factor could be triggering movements, an endogenous circadian clock might drive both patterns. © The Ornithological Society of New Zealand, Inc. 2005.

Registro:

Documento: Artículo
Título:Activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula
Autor:Quintana, R.D.; Pratolongo, P.D.; Agraz, J.L.; Benítez, O.; Mengual, A.R.
Filiación:Laboratorio de Ecología Regional, Departamento de Ecología Genética y Evolución, FCEyN, Pabellón II, 1428 Buenos Aires, Argentina
Instituto Antárctico Argentino, Cerrito 1248, 1010 Buenos Aires, Argentina
IANIGLA, CRICyT, CONICET, Ruiz Leal s/n, San Martín 5500 Mendoza, Argentina
Palabras clave:Activity rhythms; Antarctic Peninsula; Circadian clock; Daily activity; Gentoo penguin; Pygoscelis papua; activity pattern; circadian rhythm; environmental cue; seabird; Antarctic Peninsula; Antarctica; Arctic and Antarctic; Cierva Point; West Antarctica; World; Pygoscelis papua; Spheniscidae
Año:2005
Volumen:52
Número:3
Página de inicio:133
Página de fin:137
Título revista:Notornis
Título revista abreviado:Notornis
ISSN:00294470
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00294470_v52_n3_p133_Quintana

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Citas:

---------- APA ----------
Quintana, R.D., Pratolongo, P.D., Agraz, J.L., Benítez, O. & Mengual, A.R. (2005) . Activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula. Notornis, 52(3), 133-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00294470_v52_n3_p133_Quintana [ ]
---------- CHICAGO ----------
Quintana, R.D., Pratolongo, P.D., Agraz, J.L., Benítez, O., Mengual, A.R. "Activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula" . Notornis 52, no. 3 (2005) : 133-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00294470_v52_n3_p133_Quintana [ ]
---------- MLA ----------
Quintana, R.D., Pratolongo, P.D., Agraz, J.L., Benítez, O., Mengual, A.R. "Activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula" . Notornis, vol. 52, no. 3, 2005, pp. 133-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00294470_v52_n3_p133_Quintana [ ]
---------- VANCOUVER ----------
Quintana, R.D., Pratolongo, P.D., Agraz, J.L., Benítez, O., Mengual, A.R. Activity rhythms at a gentoo penguin (Pygoscelis papua) colony at Cierva Point, Antarctic Peninsula. Notornis. 2005;52(3):133-137.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00294470_v52_n3_p133_Quintana [ ]